3000 Standard Selection Procedures

The Circulute 3000 (ER) series is the ideal choice when requiring a robust gearbox in a compact package. The cycloidal design provides a large amount of contact surface area between the wheel and the pins that allows it to handle unstable loads well and minimize wear. This is our standard cycloidal series providing a variety of frame sizes (A – F) that can handle a maximum input of 60 HP, and also the possibility to implement multiple reductions when required.

There are a number of mounting options available, such as the following;

NIDEC-SHIMPO can also provide customized features for specific manufacturing environments. These features usually involve a minor changes to the seals, lubricant, the paint or coating applied, materials of construction, etc. Some examples of these special environmental conditions would be;

IP65 or Heavy Washdown

Extreme High or Low Temperature Conditions

Food Grade Critical Exposure

Among others

The Circulute 3000 can be kit build at our Itasca, IL facility or assembled by some regional certified build centers for fast delivery. From our assembly locations in North America, we can quickly provide most of the common frame sizes and ratios utilized throughout industry today. Contact NIDEC-SHIMPO AMERICA for immediate support and information about pricing and availability.

Selection Procedure for Induction Motor Applications

Select the Circulute 3000 Reducer service factor from the Service Factor Table (below) for the application taking into consideration the load classification, duration of service, and type of prime mover.

If selecting the reducer by HP, determine the design HP by multiplying the motor HP by the service factor. If selecting the reducer by torque, determine the design torque by multiplying the required load torque by the service factor.

Select the Circulute 3000 Reducer frame size from the following Selection Performance Specification Tables, making sure that the catalog rating exceeds either the design HP and/or design torque.

Note: AGMA service factors shown are the American Gear Manufacturers’ recommendations for conventional gear reducers.

Miscellaneous Engineering Information

Ambient Temperature

The ambient operating temperature range of the Circulute 3000 Reducer is from 32oF to 104oF (0oC to 40oC). Contact NIDEC-SHIMPO Customer Service if operating conditions fall outside of this range.

Backlash

The standard backlash option is approximately 1° (60 arc-min). The precision backlash option is less than 0.1° (6 arc-min).

Direction of Rotation

The input shaft can be rotated in either direction. For single reduction reducers, the output shaft rotates in the opposite direction of the input shaft. For double reduction reducers, the output shaft rotates in the same direction as the input shaft.

Exact Ratio

All Circulute 3000 reduction ratios listed in this catalog are exact.

Thermal Ratings

The high efficiency of the Circulute 3000 Speed Reducer results in thermal ratings which exceed its mechanical rating in all cases. Therefore, it can be run continuously at any of the input speeds in this catalog.

Table 1 Input Shaft Thrust & Overhung Load Capacity (lbs)

Frame Size

Load Type

Input Shaft Speed (rpm)

580

870

1165

1750

A

OHL Thrust

260

260

230

200

130

130

115

100

B

OHL Thrust

260

260

230

200

130

130

115

100

C

OHL Thrust

400

390

350

310

200

195

175

155

D

OHL Thrust

600

600

540

480

300

300

270

240

E

OHL Thrust

1,300

1,100

1,000

880

650

550

500

440

F

OHL Thrust

1,700

1,500

1,300

1,200

850

750

650

600

Notes: Overhung load ratings are based on the load being applied to the center of the shaft.Ratings shown are based on a combined overhung and thrust load being applied to the shaft.

Output Shaft Overhung Load

When a sprocket, sheave, pulley, or gear is mounted on the output shaft or on the input shaft, an overhung load is applied to the shaft. It is necessary to check whether the shafts of the reducer will allow the required overhung load.

Overhung Load Calculation

Table 2 Load Connection Factor: Cf

Type of Connection

Factor

General Purpose Chain

1.00

Machined Gear, Pinion, or Syncronous Belt

1.25

V-Belt

1.50

Flat Belt

2.50

Table 3 Output Shaft Overhung Load Capacity (lb)

Frame Size

Output Shaft Speed (rpm)

Constant Factor

40 & Below

50

60

80

100

125

150

200

250 & Above

K1

K2

A

780

780

780

780

780

764

715

650

—

5.37

4.67

B

1,284

1,284

1,284

1,284

1,284

1,268

1,186

1,073

934

5.67

4.67

AB

C

2,763

2,600

2,438

2,275

2,113

1,950

1,788

1,625

1,414

6.83

5.55

AC

D

5,038

4,713

4,550

4,063

3,738

3,575

3,250

3,088

2,687

8.26

6.38

AD, BD

E

7,475

7,475

7,475

7,475

7,313

6,825

6,338

5,688

—

11.4

9.25

BE, CE

F

12,188

12,188

11,538

10,563

9,750

9,100

8,613

7,800

—

13.9

11.1

CF, DF

Notes: These ratings are based on thrust load = 0.Contact NIDEC-SHIMPO Customer Service for applications which have combined overhung & thrust loads.